Teleportation-induced entanglement of two nanomechanical oscillators coupled to a topological superconductor

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Stefan Walter - , University of Basel (Author)
  • Jan Carl Budich - , Stockholm University, Austrian Academy of Sciences, University of Innsbruck (Author)

Abstract

A one-dimensional topological superconductor features a single fermionic zero mode that is delocalized over two Majorana bound states located at the ends of the system. We study a pair of spatially separated nanomechanical oscillators tunnel coupled to these Majorana modes. Most interestingly, we demonstrate that the combination of electron-phonon coupling and a finite charging energy on the mesoscopic topological superconductor can lead to an effective superexchange between the oscillators via the nonlocal fermionic zero mode. We further show that this electron teleportation mechanism leads to entanglement of the two oscillators over distances that can significantly exceed the coherence length of the superconductor.

Details

Original languageEnglish
Article number155431
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number15
Publication statusPublished - 28 Apr 2014
Peer-reviewedYes
Externally publishedYes